Scimitar syndrome and pulmonary sequestration. Pulmonary anomalies with persistent embryonic communications between the pulmonary and the systemic circulation.

A few cases of scimitar syndrome and intralobar pulmonary sequestration are presented. The characteristic features of the two syndromes are discussed with reference to similarities and differences. Emphasis is placed on the persistent embryonic communications between the pulmonary and the systemic circulation in both syndromes.